Conveyer



H. J. FISCHER. CONVEYER.

APPLICATION man Juni 23. 1921.

Patented May 16, l1922.

3 SHEETS-SHEET l H. J. FISCHER.

CONVEYER. APPLICATION HLED JUNE 23, 192|.

Patented' May 16, 1922.

3 SHEETS-SHEET 2.

lH. J. FISCHER'.

CONVEYER. APPLICATION man JUNE 23. 1921.

1,41 5 ,869, Patented May 16, 1922.

l s snzsswsnfe 3.

atto: mi,

i speciiieation.

UNITED `STATES PATENT OFFICE.

HENRY J. FISCHER, Oli BALTIMORE, MARYLAND, ASSGNOR OF ONE-SIXTH TOROBERT H. HAASE AND ONE-SIXTH TO FREDERICK C. DETTMAR, BOTH. F

BALTIMORE, MARYLAND.

CONVEYER.

To all, fui/1,0m. i1/may concern.:

Ile it known that l, llnivn'i J. Fisoiinn, a citizen of the UnitedStates, residing at Pmltiinore city, State ol Maryland, have inventedcertain new and useful. l'nipronements in Gonveyers,` of which thefollowing is a This invention relates to apparatus Jfor picking upmaterial and conveying the saine to a distant point, and its object istoprovide a novel and improved apparatus `of this kind by which it is madepossible to readily distribute material over large areas, and also to.till deep trenches, excavations, and the like.

With the object stated in view, the invention consists in a combinationand arrangement of elements tobe hereinafter described tightening means;Fig. 4. is an. end view of the parts shown in Fig. 2,' and Fig. 5 is acrosssection on the line 5*-5 of Fig. Q.

Referring speciically to the drawings, the conveying means of theapparatus consist of a series of bucketsl() which are carried by a pair`of parallel and endless drive chains 11. Thebuckets are suspendedbetween the chains, and they are `connected thereto in any approvedmanner, a pivotal connection being provided so that the buckets may tiltto discharge their contents.

The` apparatus also includes a. suitable trame of skeleton construction,which is composed of end sections 19. and 13, and an intermediatesection 14. At the outer extremities oi* the end sections of the frameare guide sprocket Wheels 15 Jfor the chains `1.1,and in order that the`chains may be tightened, the shaft 116 of the sprocket Wheels at the`end of the frame section 1? is mounted in a slidably supported bearingblock 17 adjustable by a screw 18 threaded through a` stationary nut 19and bearing against a slide block 20, between which latter and thehearing block is interposed a coiled spring Q1 Speccation of LettersPatent.

Patented May 16, 1922.

1921. Serial No. 479,745.

direction to tighten the chains. If any looseness in the chainsdevelops, it is necessary only to advance the screw 18, Which advancesthe slide block 20 to further compress the spring 21, and the latterthen advances the block 17 to take up the slack in the chains in anobvious manner.

The end sections 12 and 13 of the frame are pivotally connected to theintermediate section 14 at the points 2Q, so that they may `be swung ina `vertical direction to extend from the intermediate section with adownward incline. Fig. 1 shows the end section 1Q swung down, and theend section 13 extending straight out from` the intermediate section14:, but this position of the end sec tions maybe reversed, and both elsaid sections may also be set inclined or to extend straight out fromthe intermediate section,

according to the nature of the terrain or the character of the Workdesired t0 he done by the apparatus.

In Fig. 1 the inclined section .12 is the receiving end and it is shownextending into a trench, Whereas the section 13 extending straight outfrom the intermediate section 14; is the discharging end, andis shown asdischarging over the edge of an embankment.

Any suitable means may be provided for adjusting the end sections 12 and13 as described Fig. 1 shows hoisting lines 23 Suitably connected tosaid sections, said lines being operated by drums 24.

The intermediate section 14C is supported by a truck or other suitabletraveling support 25,the same carrying the drums 24, and

also the driving means 26 of the chains 11.

In order that the material may be distrib nted over a large area, ameans is provided tor varyingthe point of discharge of the `lnickets 10,so that their discharge may take place at any point between the ends ofthe section This control ot the discharge will new be described.

As pointed out hereinbefore, the buckets 110 are pivotally supported bythe chains 11 so that they may tilt to dumping position, and hence byholding the buckets so that they cannot tilt until they reach. thedesired point of discharge, and providingr an adjustablebucket-releasingmeans. it is possible to permit the discharge to take place at any`point along the section` 13 ofthe frame.

tending to constantly urge the latter in a The buckets l0 are so pivotedtothe. chains 3.10

1.1 that they are unbalanced and have a nor mal tendency to tiltv todumping position with a forward motion, and hence a means must beprovided for preventing such tilting movement until the desired point ofdischarge is reached. rlhis means conslsts of a pair of chains27-ruun1ng parallel to the path taken by the buckets, and positioned tobe engaged by the rear ends thereof. At the point of discharge, thechains 27 are lead away from the buckets, and the latter now whereby thechains 27 are lead away fromV being free of said chains automaticallytilt and dump their contents. The means the 'buckets are clearly shownin Figs. 2 and 5.A The sides of the frame section 13 carry rails 28 onwhich are mounted slides 29 carrying vertically spaced guide pulleys 3()and 3 1. The slides 29 are connected by a cross member 32 to move asone.v At the same level v as the pulleys 30 and 31, are guide pulleys 32crank 35.

4chains 27 in a vertical direction away from lthe buckets 10, and whenthe latter reach the and 33 over whieh'the chains 27 also pass, saidpulleys 32 and 33 being supported by the frame `section 13. The slides29 are operated by screws 34 to change their position in the directionof the length of the frame section 13, these screws being operatedthrough a suitable gearing from a hand The guide pulleys 30v and 31 leadthe gap, they are no longer held in carrying position, but are free totilt to dumping position, as clearly shown in Fig. 2. The pulleys 33 arepositioned to lead the chains 27 back to bucket-engaging position andwhen the buckets reach the samethey are swung back to carrying positionand pass in this position over the sprocket wheel 15 at the extremity ofthefrarne section 13, vand then pass to the upperY run ofthe apparatusback to the receiving end at'the extremity of the frame section 12 wherethey pass over the sprocket wheel 15 at this end and then to the lower'run. The chains 27 run parallel to the drive chain 11 and close. enoughto thebuc'kets so that they may be engaged by the rear ends V ofthelatter, except where the hereinbefore described gap occurs, and also atthe receivingl end of the apparatus, at which latter are two guidepulleys 36 for spacing the chains 27 at this point from the buckets soas not to `section-12. Intermediate its ends, lat the upper' run, 'thelchains27 pass over drive sprocketl wheels 37 Aobtaining power 'from the.s-111@ Source jas lthe drive chJainSll, it being understood that thetwo nets of chains are driven at thc sa me rate of speed so that thereis no relative sliding movement between the buckets 10 and the chains27. lli* the frame section- 12 is set horizontal similar to the -frainesection 13, it will be .necessary to lower the bottom guide pulley 36 tobring the chains 27 lower down for holding the lnickets 1() in propercarrying` position.

The sides of the frame sections may be provided with guide rails 3S forrollers 39 carried by the pivotal connections of the buckets 10 with thechains 11. The shaft 16 is preferably supported by two bearing blocks 17mounted on rails i0 carried by the sides of the frame section 13. At theextremity of the frame section 13, the chains 27 pass over sprocketwheels L11 carried by the shaft 16, said chains being therefore capableof beine tightened by the same tightener means as that of the chains 11.

I claim:

1. A conveying apparatus comprising an endless driving element, pivotedbuckets carried by said element and unbalanced to have a normal tendencyto tilt to dumping position, a restraining element ruiming parallel tothe path of the buckets and engageable thereby to prevent tiltingthereof to dumping position, said element having a portion which isspaced from the buckets a distance to clear the same and permit tilting,and means for changing the position of said spaced portion in thedirection of the length of the apparatus.

2. A conveying apparatus comprising an endless driving element, pivotedbuckets carried by said element and unbalanced to have a normal tendencyto tilt to dumping position. a restraining element running parallel tothe path of the buckets, and engageable thereby to prevent tiltingthereof to dumping position, said element having a portion which isspaced from the buckets a distance to clear the same and permit tilting,and another spaced portion to permit tilting of the buckets at thereceiving end of the apparatus to receiving position, and means forchanging the position of the first-mentioned spaced portion in thedirection of the length of the apparatus.

3. A conveying apparatus comprising an `endless driving element, pivotedbuckets ea rried by said element and unbalanced to have a normaltendency to tilt to dumping position, and a flexible restraining elementdriven parallel to the path of the buckets and engageable thereby toprevent tilting thereof. said element having a portion which is spacedfrom the buckets a distance to clear the saine and permit tilting.

4. A conveying apparatus comprising an endless driving element, pivotedbuckets carried by said element and unbalanced to have a normal tendencyto tilt to dumping position, and a exible restinininer element drivenparallel to the path of tlicbuckets and engageable thereby to preventtiltingr thereo'li, said. element havin g a portion which is spaced:troni the bnclcets a distance to clear the same and perinit tilting,and another spaced portion to permit tilting ot the buckets at thereceiving endA of the apparatus to receiving position.

A conveying apparatus comprising an endless driving element, pivotedbuckets carried by said element and, unbalanced to have a normaltendency to tilt to dumping posi.- tion, a flexible restraining elenlentdriven parallel to the pat-h oi' the buckets and en gageable thereby toprevent tilting` thereof, said element having a portion which is spacedfrom the buckets a dista nee to clear the same and permit tilting, andmeans for changing the position cil? said spaced portion in the drection oil" the length oit the apijiaratus.

6. conveying` apparatus comprising an endless driving element, pivotedbuckets carried by said element and unbalanced to have a nei-maltendency to tilt to dumping position, a H exilivle restraining elementdriven parallel to the path oi" the buckets and ennaneable thereby toprevent tilting' thereof, i

said element having a portion which spaced from the buckets a distanceto clear the saine and permit tilting', and another spaced portion topermit tilting` oit the buckets at the receiving end. ot the apparatusto receiving;- position, and means tor changing the position et theirstmeutioned spaced portion in the direction el? the length of theapparatus.

In testimony whereeil l a'liii; my si gnature.

HENRY J. FISCHER.

